B1481

DTC Description

The Driver Airbag circuit consists of the SRSCM, Clockspring and the Driver Airbag (DAB). The SRSCM sets above DTC(s) if it detects that the resistance of DAB squib is too high or low.

DTC Detecting Condition





Specification

DAB resistance : 1.5 - 6.0 Ohms


Schematic Diagram





Terminal & Connector Inspection

Refer to the DESCRIPTION in this TROUBLESHOOTING section.

Inspection Procedure

1. PREPARATION
Refer to the DESCRIPTION in this TROUBLESHOOTING section.
2. CHECK DAB RESISTANCE

CAUTION:
Never attempt to measure the circuit resistance of the airbag module(squib) with an ohmmeter.

(1) Connect the Dummy and the Dummy Adapter on DAB harness connector.
XRefer to "SPECIAL SERVICE TOOL" section in this SERVICE MANUAL for the SST No. of Dummy and Dummy Adapter.
(2) Measure resistance between the terminal 5 and 6 of SRSCM harness connector(A).

Specification (resistance) : 1.5 - 6.0 Ohms





(3) Is the measured resistance within specification?
NO
> Check open circuit.
YES
> Replace the Driver Airbag(DAB) module.
3. CHECK OPEN CIRCUIT
(1) Measure resistance between the terminal 2 of DAB harness connector and the terminal 5 of SRSCM harness connector(A).
(2) Measure resistance between the terminal 1 of DAB harness connector and the terminal 6 of SRSCM harness connector(A).

Specification (resistance) : below 1 Ohms





(3) Is the measured resistance within specification?
YES
> Check short circuit.
NO
> Repair or replace the wiring harness between the DAB and the clockspring or between the clockspring and the SRSCM.
4. CHECK SHORT CIRCUIT
(1) Measure resistance between the terminal 1 and 2 of DAB harness connector.

Specification (resistance) : Infinity Ohms





(2) Is the measured resistance within specification?
YES
> Go to next step.
NO
> Repair or replace the wiring harness between the DAB and the clockspring or between the clockspring and the SRSCM.
5. CLEAR THE DTC AND CHECK THE VEHICLE AGAIN
Refer to the DESCRIPTION in this TROUBLESHOOTING section.